How old is your dog or cat in human years? Enter their age below for an accurate answer — plus what life stage they're in right now.
The 1:7 ratio has been repeated for decades, but it doesn't hold up. Dogs age much faster in their early years and slow down later. A 1-year-old dog is already sexually mature — more like a 15-year-old human than a 7-year-old.
Modern calculations use size and breed data. Larger dogs age faster than smaller ones, and the rate of aging changes significantly across a dog's lifespan.
Cats follow a different curve. The first year of a cat's life is equivalent to about 15 human years. By age 2, they're closer to 24. After that, each cat year adds roughly 4 human years — making a 10-year-old cat about 56 in human terms.
Most cats are considered "senior" at 11 and "super senior" at 15. With good care, many reach their mid-80s in human equivalent age.
Knowing your pet's human age equivalent helps you understand what care they need right now. A dog in their "40s" may need joint support. A cat in their "70s" benefits from more frequent vet checkups. Age isn't just a number — it shapes everything from diet to activity levels.
Anivo is a private app to collect memories, photos, and stories of your companion — before they fade.
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